Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsSeiko Prospex Land Mechanical GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
Prospex Land Mechanical GMT39.5mm
Power Reserve
Sea Storm MK2 GMT40h
Prospex Land Mechanical GMT72h
Water Resistance
Sea Storm MK2 GMT300m
Prospex Land Mechanical GMT200m
MSRP
Sea Storm MK2 GMT$415
Prospex Land Mechanical GMT$1,150
Full specifications
Case
6 specsCategory
Diver
GMT
Diameter
41.50mm
39.5mm
Thickness
14.15mm
13.6mm
Lug-to-Lug
48.50mm
46.4mm
Lug Width
20mm
20mm
Water Resistance
300m
200m
Crystal & Dial
3 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands and index(es)
Movement
3 specsCaliber
NH34
6R54
Power Reserve
40h
72h
Jewels
25
24
Pricing
1 specsMSRP
$415
$1,150
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